Dpreview preview plus samples is now up.
A Panasonic G3 promotional video.
A fascinating interview with Panasonic on Photography Blog.
This includes the following:-
Question: And there's a new lens to go with the G3 isn't there?
JM: “Yes, here's the first working sample of the 25mm f/1.4; really eagerly anticipated and not planned for launch until the second half of this year. It will be Leica approved and branded"